Image:Dust.devil.mars.arp.750pix.jpg

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English: A dust devil on Mars, photographed by Mars Global Surveyor. The long dark streak is formed by a moving swirling column of Martian atmosphere. The dust devil itself (the black spot) is climbing the crater wall. The streaks on the right are sand dunes on the crater floor.

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English Wikipedia, original upload 12 December 2003 by Arpingstone

http://antwrp.gsfc.nasa.gov/apod/ap020903.html

http://antwrp.gsfc.nasa.gov/apod/image/0209/dustdevil_mgs.jpg

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